If they really are new plaster walls you should wait at least 30 days before you paint them to allow them to dry out even though they appear to be dry they are not.

I would prime them with an acrylic undecoater such as Duron Acrylic Enamel Undercoater or similar product from you local paint supplier. You want an acrylic primer rather than a plain latex primer as it will more resistant to alkalinity in the plaster and not peel off. Then you can apply 2 coats of the latex finish paint of your choice.

Peeling WallsWe bought a house in 1999, that was built in 19...6 REPLIES